Kuala Lumpur, Malaysia (CNN) -- The mysteries surrounding the disappearance of Malaysia Airlines Flight 370, and the true identities of some of its passengers, are as deep as the South China Sea waters a multinational search team is canvassing for the jet.

One promising lead has turned out to be a dead end. A "strange object" spotted by a Singaporean search plane late Sunday afternoon is not debris from the missing jetliner, a U.S. official familiar with the issue told CNN on Sunday.

A U.S. reconnaissance plane "thought it saw something like debris but it was a false alarm," said the official who spoke on condition of anonymity.

(03-09-2014, 05:03 PM)Octo Wrote: Kuala Lumpur, Malaysia (CNN) -- The mysteries surrounding the disappearance of Malaysia Airlines Flight 370, and the true identities of some of its passengers, are as deep as the South China Sea waters a multinational search team is canvassing for the jet.

One promising lead has turned out to be a dead end. A "strange object" spotted by a Singaporean search plane late Sunday afternoon is not debris from the missing jetliner, a U.S. official familiar with the issue told CNN on Sunday.

A U.S. reconnaissance plane "thought it saw something like debris but it was a false alarm," said the official who spoke on condition of anonymity.

KUALA LUMPUR—A Vietnamese search aircraft located fragments Sunday floating in waters off southern Vietnam that are suspected of coming from a Malaysia Airlines 3786.KU 0.00% jetliner that went missing a day earlier with 239 people on board.

The fragments were believed to be a composite inner door and a piece of the tail, Vietnam's ministry of information and communication said in a posting on its website. They were located about 50 miles south-southwest of Tho Chu island.

(Reuters) - Officials investigating the disappearance of a Malaysian airliner with 239 people on board are narrowing the focus of their inquiries on the possibility that it disintegrated in mid-flight, a senior source said on Sunday.

"The fact that we are unable to find any debris so far appears to indicate that the aircraft is likely to have disintegrated at around 35,000 feet," said the source, who is involved in the investigations in Malaysia.

(03-09-2014, 05:52 PM)Octo Wrote: (Reuters) - Officials investigating the disappearance of a Malaysian airliner with 239 people on board are narrowing the focus of their inquiries on the possibility that it disintegrated in mid-flight, a senior source said on Sunday.

"The fact that we are unable to find any debris so far appears to indicate that the aircraft is likely to have disintegrated at around 35,000 feet," said the source, who is involved in the investigations in Malaysia.